Released on: November 5, 2007, 11:58 am

Press Release Author: Damien Rame, Accedian Networks

Industry: Telecommunications

Press Release Summary: Montreal, QC, November 5, 2007 - Accedian Networks Inc., a
leading provider of Service Assurance solutions and Ethernet Demarcation Devices,
today announced that FiberTower Corporation (NASDAQ: FTWR) has selected and deployed
the Company's EtherNIDT SLA-MeterT platform to measure performance and assure
Service Level Agreements (SLAs) on its Ethernet-based backhaul network. FiberTower,
a leading alternative provider of backhaul services for wireless carriers, chose
Accedian's Ethernet Service Assurance Platform to monitor SLA parameters end-to-end
in a multi-point environment.


Press Release Body: The Accedian EtherNIDT family allows backhaul service providers
to guarantee stringent Ethernet SLA parameters between each Base Station and the
Mobile Switching Centers, a key requirement in the intensive rollout of 3G and WiMAX
service initiatives currently taking place in the US.

"Accedian's platform allows us to take control of our SLAs and to map out the health
of our network in real-time, enabling us to deliver on the stringent 3G and 4G
backhaul requirements set down by our carrier customers," said Michael Finlayson,
FiberTower's Senior Vice-President of Technology.

The Accedian EtherNIDT platform incorporates a highly accurate hardware-assisted
engine (PAAT), which allows constant and seamless in-service monitoring of SLA
parameters including packet loss, latency (delay), jitter (delay variation) and
continuous end-to-end path continuity check (availability). All of this is achieved
across (up to) 100 simultaneous customer traffic streams, with an ultra-precise one
microsecond resolution in an end-to-end, multipoint fashion.

"Because of the very stringent, few millisecond-level, SLA parameters asked upon
wireless backhaul providers, SLA measurements must be performed in the micro-second
domain" said Patrick Ostiguy, President and CEO of Accedian Networks Inc. "With its
highly-scalable multipoint topology support and its ultra-high density form factor,
the EtherNIDT family is optimized for wireless backhaul projects."

Additionally, the EtherNIDT features a high-performance Fast-ThruT engine and thus
minimizes intrinsic packet-jitter and latency of the device, as well as
sub-microsecond at 100% wire-speed for all packet sizes, including jumbo packets up
to 10,240 bytes, virtually eliminating the introduction of latency or jitter to the
service itself.

About Accedian Networks:

Accedian Networks is located in Montreal, Canada and has a leading-edge expertise in
the area of Ethernet Service Assurance and emerging OAM standards for Carrier-Grade
Ethernet Services. Accedian\'s unique technology for Ethernet Service Assurance and
OAM (Operations, Administration and Maintenance) uses an innovative, standards-based
approach. Part of an Ethernet Service Assurance Platform (ESAP), Accedian\'s flagship
product line, the EtherNIDT allows clearly defining, maintaining and assuring
Ethernet Service Level Agreements from End-to-End across multiple technologies. For
additional information, visit: www.accedian.com or call 1-866-685-8181.

Accedian, EtherNID, SLA-meter, Performance Assurance Agent, PAA, Multi-SLA and
"Map-out the Health of your Network" are trademarks of Accedian Networks Inc.


- 30 -

Source and contact information:
Damien Ramé
Product Marketing Manager
Accedian Networks Inc.
Tel : 514 331-6181 (toll free : 1 866 685-8181)
Fax : 514 331-2210
Email: marketing-pr@accedian.com



Web Site: http://www.accedian.com

Contact Details: Accedian Networks
4878 Levy St., Suite 202
St-Laurent, QC, H4R 2P1
Canada
Phone: 514-331-6181
Fax: 514-331-2210